Patent US3570185A successfully refreshed from Google Patents.
US3570185A
Expired / Lapsed
US
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Grinding machine
Assignee: Heald Machine Co
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Filing: 1969-07-09
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Granted: 1971-03-16
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Expires: 1989-07-09
Abstract
Abstract THIS INVENTION RELATES TO A GRINDING MACHINE AND, MORE PARTICULARLY, TO APPARATUS ARRANGED TO GENERATE A SURFACE OF REVOLUTION BY THE ABRASIVE METHOD.
Inventors
- 👤 Herbert R Uhtenwoldt
- 👤 Frederick A Hohler
- 👤 Robert G Hatstat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:12
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16; B24B47/00; B24B47/02; B24B47/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |